A multiscale Malkmus model for treatment of inhomogeneous gas paths

The Malkmus narrow-band model, while good for homogeneous gas paths, cannot be directly applied to paths with inhomogeneities in temperature, mole fraction and total pressure. The most popular and successful approaches today for dealing with inhomogeneous paths are the Curtis–Godson approximation and the correlated-k model. However, these approaches are not accurate for paths with severe inhomogeneities. The current work discusses the development of a multi-scale Malkmus model to overcome these limitations. The model is validated with theoretical data for CO2 and H2O obtained from the CDSD and HITEMP databases, respectively.